<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script type="text/javascript">
				function fn(){
					var a=5;
					document.write(a+"<br>");
				}
				fn();
				function fn2(){
					document.write(a);
				}
				fn2();
		</script>
	</head>
	<body>
	</body>
</html>